I just created my first Swift project, in the AppDelegate.swift there is a line above a class declaration - why is it there?! ... import UIKit import CoreData @UIApplicationMain // <- WHY IS IT HERE? class AppDelegate: UIResponder, UIApplicationDelegate { ...
![What does "@UIApplicationMain" mean?](https://cdn-ak-scissors.b.st-hatena.com/image/square/98d6f053a97a87156775f60757c60865d0f2c47d/height=288;version=1;width=512/https%3A%2F%2Fcdn.sstatic.net%2FSites%2Fstackoverflow%2FImg%2Fapple-touch-icon%402.png%3Fv%3D73d79a89bded)